+2001-02-15 Mark Mitchell <mark@codesourcery.com>
+
+ Remove old ABI support from libsupc++.
+ * libsupc++/cxxabi.h: Remove conditionally compiled code.
+ * libsupc++/exception_support.cc: Likewise.
+ * libsupc++/pure.cc: Likewise.
+ * libsupc++/tinfo.cc: Likewise.
+ * libsupc++/tinfo.h: Likewise.
+ * libsupc++/tinfo2.cc: Likewise.
+ * libsupc++/typeinfo: Likewise.
+ * libsupc++/vec.cc: Likewise.
+
2001-02-15 Benjamin Kosnik <bkoz@redhat.com>
Add support for -fno-exceptions.
#ifndef __CXXABI_H
#define __CXXABI_H 1
-#if defined(__cplusplus) && (!defined(__GXX_ABI_VERSION) || __GXX_ABI_VERSION < 100)
-/* These structures only make sense when targeting the new abi, catch a
- bonehead error early rather than let the user get very confused. */
-#error "Not targetting the new abi, supply -fnew-abi"
-#endif
-
#ifdef __cplusplus
// We use the compiler builtins __SIZE_TYPE__ and __PTRDIFF_TYPE__ instead of
void *match_type = match_info;
-#if !defined (__GXX_ABI_VERSION) || __GXX_ABI_VERSION < 100
- match_type = ((void *(*)())match_type) ();
-#endif
-
if (__throw_type_match_rtti_2 (match_type, info->type,
info->original_value, &info->value))
// Arbitrary non-null pointer.
// Helpers for rtti. Although these don't return, we give them return types so
// that the type system is not broken.
extern "C" void *
-__cxa_bad_cast()
+__cxa_bad_cast ()
{
#ifdef __EXCEPTIONS
throw std::bad_cast();
}
extern "C" std::type_info const &
-__cxa_bad_typeid()
+__cxa_bad_typeid ()
{
#ifdef __EXCEPTIONS
throw std::bad_typeid();
// -*- C++ -*-
-
-// Copyright (C) 2000 Free Software Foundation
+// Copyright (C) 2000, 2001 Free Software Foundation
//
// This file is part of GNU CC.
//
extern void __terminate(void) __attribute__ ((__noreturn__));
-// The name of the function to be placed in vtables in place of a pure
-// virtual function is different in the two ABIs.
-#if !defined(__GXX_ABI_VERSION) || __GXX_ABI_VERSION < 100
-#define PURE_VIRTUAL_NAME __pure_virtual
-#else
-#define PURE_VIRTUAL_NAME __cxa_pure_virtual
-#endif
-
void
-PURE_VIRTUAL_NAME (void)
+__cxa_pure_virtual (void)
{
writestr ("pure virtual method called\n");
__terminate ();
// Methods for type_info for -*- C++ -*- Run Time Type Identification.
-
-// Copyright (C) 1994, 1996, 1998, 1999, 2000 Free Software Foundation
+// Copyright (C) 1994, 1996, 1998, 1999, 2000, 2001 Free Software Foundation
//
// This file is part of GNU CC.
//
#endif
-#if !defined(__GXX_ABI_VERSION) || __GXX_ABI_VERSION < 100
-// original (old) abi
-
-namespace
-{
-// ADDR is a pointer to an object. Convert it to a pointer to a base,
-// using OFFSET.
-inline void*
-convert_to_base (void *addr, bool is_virtual, myint32 offset)
-{
- if (!addr)
- return NULL;
-
- if (!is_virtual)
- return (char *) addr + offset;
-
- // Under the old ABI, the offset gives us the address of a pointer
- // to the virtual base.
- return *((void **) ((char *) addr + offset));
-}
-
-}
-
-extern "C" void
-__rtti_class (void *addr, const char *name,
- const __class_type_info::base_info *bl, std::size_t bn)
-{ new (addr) __class_type_info (name, bl, bn); }
-
-extern "C" void
-__rtti_si (void *addr, const char *n, const std::type_info *ti)
-{
- new (addr) __si_type_info
- (n, static_cast <const __user_type_info &> (*ti));
-}
-
-extern "C" void
-__rtti_user (void *addr, const char *name)
-{ new (addr) __user_type_info (name); }
-
-// Upcast for catch checking. OBJPTR points to the thrown object and might be
-// NULL. Return 0 on failure, non-zero on success. Set *ADJPTR to adjusted
-// object pointer.
-int __user_type_info::
-upcast (const type_info &target, void *objptr,
- void **adjptr) const
-{
- upcast_result result;
-
- if (do_upcast (contained_public, target, objptr, result))
- return 0;
- *adjptr = result.target_obj;
- return contained_public_p (result.whole2target);
-}
-
-// Down or cross cast for dynamic_cast. OBJPTR points to the most derrived
-// object, SUBPTR points to the static base object. Both must not be NULL.
-// TARGET specifies the desired target type, SUBTYPE specifies the static
-// type. Both must be defined. Returns adjusted object pointer on success,
-// NULL on failure. [expr.dynamic.cast]/8 says 'unambiguous public base'. This
-// itself is an ambiguous statement. We choose it to mean the base must be
-// separately unambiguous and public, rather than unambiguous considering only
-// public bases.
-void *__user_type_info::
-dyncast (int boff,
- const type_info &target, void *objptr,
- const type_info &subtype, void *subptr) const
-{
- dyncast_result result;
-
- do_dyncast (boff, contained_public,
- target, objptr, subtype, subptr, result);
- if (!result.target_obj)
- return NULL;
- if (contained_public_p (result.target2sub))
- return result.target_obj;
- if (contained_public_p (sub_kind (result.whole2sub & result.whole2target)))
- // Found a valid cross cast
- return result.target_obj;
- if (contained_nonvirtual_p (result.whole2sub))
- // Found an invalid cross cast, which cannot also be a down cast
- return NULL;
- if (result.target2sub == unknown)
- result.target2sub = static_cast <const __user_type_info &> (target)
- .find_public_subobj (boff, subtype,
- result.target_obj, subptr);
- if (contained_public_p (result.target2sub))
- // Found a valid down cast
- return result.target_obj;
- // Must be an invalid down cast, or the cross cast wasn't bettered
- return NULL;
-}
-
-// Catch cast helper. ACCESS_PATH is the access from the complete thrown
-// object to this base. TARGET is the desired type we want to catch. OBJPTR
-// points to this base within the throw object, it might be NULL. Fill in
-// RESULT with what we find. Return true, should we determine catch must fail.
-bool __user_type_info::
-do_upcast (sub_kind access_path,
- const type_info &target, void *objptr,
- upcast_result &__restrict result) const
-{
- if (*this == target)
- {
- result.target_obj = objptr;
- result.base_type = nonvirtual_base_type;
- result.whole2target = access_path;
- return contained_nonpublic_p (access_path);
- }
- return false;
-}
-
-// dynamic cast helper. ACCESS_PATH gives the access from the most derived
-// object to this base. TARGET indicates the desired type we want. OBJPTR
-// points to this base within the object. SUBTYPE indicates the static type
-// started from and SUBPTR points to that base within the most derived object.
-// Fill in RESULT with what we find. Return true if we have located an
-// ambiguous match.
-bool __user_type_info::
-do_dyncast (int, sub_kind access_path,
- const type_info &target, void *objptr,
- const type_info &subtype, void *subptr,
- dyncast_result &__restrict result) const
-{
- if (objptr == subptr && *this == subtype)
- {
- // The subobject we started from. Indicate how we are accessible from
- // the most derived object.
- result.whole2sub = access_path;
- return false;
- }
- if (*this == target)
- {
- result.target_obj = objptr;
- result.whole2target = access_path;
- result.target2sub = not_contained;
- return false;
- }
- return false;
-}
-
-// find_public_subobj helper. Return contained_public if we are the desired
-// subtype. OBJPTR points to this base type, SUBPTR points to the desired base
-// object.
-__user_type_info::sub_kind __user_type_info::
-do_find_public_subobj (int, const type_info &, void *objptr, void *subptr) const
-{
- if (subptr == objptr)
- // Must be our type, as the pointers match.
- return contained_public;
- return not_contained;
-}
-
-// catch helper for single public inheritance types. See
-// __user_type_info::do_upcast for semantics.
-bool __si_type_info::
-do_upcast (sub_kind access_path,
- const type_info &target, void *objptr,
- upcast_result &__restrict result) const
-{
- if (*this == target)
- {
- result.target_obj = objptr;
- result.base_type = nonvirtual_base_type;
- result.whole2target = access_path;
- return contained_nonpublic_p (access_path);
- }
- return base.do_upcast (access_path, target, objptr, result);
-}
-
-// dynamic cast helper for single public inheritance types. See
-// __user_type_info::do_dyncast for semantics. BOFF indicates how SUBTYPE
-// types are inherited by TARGET types.
-bool __si_type_info::
-do_dyncast (int boff, sub_kind access_path,
- const type_info &target, void *objptr,
- const type_info &subtype, void *subptr,
- dyncast_result &__restrict result) const
-{
- if (objptr == subptr && *this == subtype)
- {
- // The subobject we started from. Indicate how we are accessible from
- // the most derived object.
- result.whole2sub = access_path;
- return false;
- }
- if (*this == target)
- {
- result.target_obj = objptr;
- result.whole2target = access_path;
- if (boff >= 0)
- result.target2sub = ((char *)subptr - (char *)objptr) == boff
- ? contained_public : not_contained;
- else if (boff == -2)
- result.target2sub = not_contained;
- return false;
- }
- return base.do_dyncast (boff, access_path,
- target, objptr, subtype, subptr, result);
-}
-
-// find_public_subobj helper. See __user_type_info::do_find_public_subobj or
-// semantics. BOFF indicates how SUBTYPE types are inherited by the original
-// target object.
-__user_type_info::sub_kind __si_type_info::
-do_find_public_subobj (int boff, const type_info &subtype, void *objptr, void *subptr) const
-{
- if (subptr == objptr && subtype == *this)
- return contained_public;
- return base.do_find_public_subobj (boff, subtype, objptr, subptr);
-}
-
-// catch helper for multiple or non-public inheritance types. See
-// __user_type_info::do_upcast for semantics.
-bool __class_type_info::
-do_upcast (sub_kind access_path,
- const type_info &target, void *objptr,
- upcast_result &__restrict result) const
-{
- if (*this == target)
- {
- result.target_obj = objptr;
- result.base_type = nonvirtual_base_type;
- result.whole2target = access_path;
- return contained_nonpublic_p (access_path);
- }
-
- for (std::size_t i = n_bases; i--;)
- {
- upcast_result result2;
- void *p = objptr;
- sub_kind sub_access = access_path;
- p = convert_to_base (p,
- base_list[i].is_virtual,
- base_list[i].offset);
- if (base_list[i].is_virtual)
- sub_access = sub_kind (sub_access | contained_virtual_mask);
- if (base_list[i].access != PUBLIC)
- sub_access = sub_kind (sub_access & ~contained_public_mask);
- if (base_list[i].base->do_upcast (sub_access, target, p, result2)
- && !contained_virtual_p (result2.whole2target))
- return true; // must fail
- if (result2.base_type)
- {
- if (result2.base_type == nonvirtual_base_type
- && base_list[i].is_virtual)
- result2.base_type = base_list[i].base;
- if (!result.base_type)
- result = result2;
- else if (result.target_obj != result2.target_obj)
- {
- // Found an ambiguity.
- result.target_obj = NULL;
- result.whole2target = contained_ambig;
- return true;
- }
- else if (result.target_obj)
- {
- // Ok, found real object via a virtual path.
- result.whole2target
- = sub_kind (result.whole2target | result2.whole2target);
- }
- else
- {
- // Dealing with a null pointer, need to check vbase
- // containing each of the two choices.
- if (result2.base_type == nonvirtual_base_type
- || result.base_type == nonvirtual_base_type
- || !(*result2.base_type == *result.base_type))
- {
- // Already ambiguous, not virtual or via different virtuals.
- // Cannot match.
- result.whole2target = contained_ambig;
- return true;
- }
- result.whole2target
- = sub_kind (result.whole2target | result2.whole2target);
- }
- }
- }
- return false;
-}
-
-// dynamic cast helper for non-public or multiple inheritance types. See
-// __user_type_info::do_dyncast for overall semantics.
-// This is a big hairy function. Although the run-time behaviour of
-// dynamic_cast is simple to describe, it gives rise to some non-obvious
-// behaviour. We also desire to determine as early as possible any definite
-// answer we can get. Because it is unknown what the run-time ratio of
-// succeeding to failing dynamic casts is, we do not know in which direction
-// to bias any optimizations. To that end we make no particular effort towards
-// early fail answers or early success answers. Instead we try to minimize
-// work by filling in things lazily (when we know we need the information),
-// and opportunisticly take early success or failure results.
-bool __class_type_info::
-do_dyncast (int boff, sub_kind access_path,
- const type_info &target, void *objptr,
- const type_info &subtype, void *subptr,
- dyncast_result &__restrict result) const
-{
- if (objptr == subptr && *this == subtype)
- {
- // The subobject we started from. Indicate how we are accessible from
- // the most derived object.
- result.whole2sub = access_path;
- return false;
- }
- if (*this == target)
- {
- result.target_obj = objptr;
- result.whole2target = access_path;
- if (boff >= 0)
- result.target2sub = ((char *)subptr - (char *)objptr) == boff
- ? contained_public : not_contained;
- else if (boff == -2)
- result.target2sub = not_contained;
- return false;
- }
- bool result_ambig = false;
- for (std::size_t i = n_bases; i--;)
- {
- dyncast_result result2;
- void *p;
- sub_kind sub_access = access_path;
- p = convert_to_base (objptr,
- base_list[i].is_virtual,
- base_list[i].offset);
- if (base_list[i].is_virtual)
- sub_access = sub_kind (sub_access | contained_virtual_mask);
- if (base_list[i].access != PUBLIC)
- sub_access = sub_kind (sub_access & ~contained_public_mask);
-
- bool result2_ambig
- = base_list[i].base->do_dyncast (boff, sub_access,
- target, p, subtype, subptr, result2);
- result.whole2sub = sub_kind (result.whole2sub | result2.whole2sub);
- if (result2.target2sub == contained_public
- || result2.target2sub == contained_ambig)
- {
- result.target_obj = result2.target_obj;
- result.whole2target = result2.whole2target;
- result.target2sub = result2.target2sub;
- // Found a downcast which can't be bettered or an ambiguous downcast
- // which can't be disambiguated
- return result2_ambig;
- }
-
- if (!result_ambig && !result.target_obj)
- {
- // Not found anything yet.
- result.target_obj = result2.target_obj;
- result.whole2target = result2.whole2target;
- result_ambig = result2_ambig;
- }
- else if (result.target_obj && result.target_obj == result2.target_obj)
- {
- // Found at same address, must be via virtual. Pick the most
- // accessible path.
- result.whole2target =
- sub_kind (result.whole2target | result2.whole2target);
- }
- else if ((result.target_obj && result2.target_obj)
- || (result_ambig && result2.target_obj)
- || (result2_ambig && result.target_obj))
- {
- // Found two different TARGET bases, or a valid one and a set of
- // ambiguous ones, must disambiguate. See whether SUBOBJ is
- // contained publicly within one of the non-ambiguous choices.
- // If it is in only one, then that's the choice. If it is in
- // both, then we're ambiguous and fail. If it is in neither,
- // we're ambiguous, but don't yet fail as we might later find a
- // third base which does contain SUBPTR.
-
- sub_kind new_sub_kind = result2.target2sub;
- sub_kind old_sub_kind = result.target2sub;
-
- if (contained_nonvirtual_p (result.whole2sub))
- {
- // We already found SUBOBJ as a non-virtual base of most
- // derived. Therefore if it is in either choice, it can only be
- // in one of them, and we will already know.
- if (old_sub_kind == unknown)
- old_sub_kind = not_contained;
- if (new_sub_kind == unknown)
- new_sub_kind = not_contained;
- }
- else
- {
- const __user_type_info &t =
- static_cast <const __user_type_info &> (target);
-
- if (old_sub_kind >= not_contained)
- ;// already calculated
- else if (contained_nonvirtual_p (new_sub_kind))
- // Already found non-virtually inside the other choice,
- // cannot be in this.
- old_sub_kind = not_contained;
- else
- old_sub_kind = t.find_public_subobj (boff, subtype,
- result.target_obj, subptr);
-
- if (new_sub_kind >= not_contained)
- ;// already calculated
- else if (contained_nonvirtual_p (old_sub_kind))
- // Already found non-virtually inside the other choice,
- // cannot be in this.
- new_sub_kind = not_contained;
- else
- new_sub_kind = t.find_public_subobj (boff, subtype,
- result2.target_obj, subptr);
- }
-
- // Neither sub_kind can be contained_ambig -- we bail out early
- // when we find those.
- if (contained_p (sub_kind (new_sub_kind ^ old_sub_kind)))
- {
- // Only on one choice, not ambiguous.
- if (contained_p (new_sub_kind))
- {
- // Only in new.
- result.target_obj = result2.target_obj;
- result.whole2target = result2.whole2target;
- result_ambig = false;
- old_sub_kind = new_sub_kind;
- }
- result.target2sub = old_sub_kind;
- if (result.target2sub == contained_public)
- return false; // Can't be an ambiguating downcast for later discovery.
- }
- else if (contained_p (sub_kind (new_sub_kind & old_sub_kind)))
- {
- // In both.
- result.target_obj = NULL;
- result.target2sub = contained_ambig;
- return true; // Fail.
- }
- else
- {
- // In neither publicly, ambiguous for the moment, but keep
- // looking. It is possible that it was private in one or
- // both and therefore we should fail, but that's just tough.
- result.target_obj = NULL;
- result.target2sub = not_contained;
- result_ambig = true;
- }
- }
-
- if (result.whole2sub == contained_private)
- // We found SUBOBJ as a private non-virtual base, therefore all
- // cross casts will fail. We have already found a down cast, if
- // there is one.
- return result_ambig;
- }
-
- return result_ambig;
-}
-
-// find_public_subobj helper for non-public or multiple inheritance types. See
-// __user_type_info::do_find_public_subobj for semantics. We make use of BOFF
-// to prune the base class walk.
-__user_type_info::sub_kind __class_type_info::
-do_find_public_subobj (int boff, const type_info &subtype, void *objptr, void *subptr) const
-{
- if (objptr == subptr && subtype == *this)
- return contained_public;
-
- for (std::size_t i = n_bases; i--;)
- {
- if (base_list[i].access != PUBLIC)
- continue; // Not public, can't be here.
- void *p;
-
- if (base_list[i].is_virtual && boff == -3)
- // Not a virtual base, so can't be here.
- continue;
-
- p = convert_to_base (objptr,
- base_list[i].is_virtual,
- base_list[i].offset);
-
- sub_kind base_kind = base_list[i].base->do_find_public_subobj
- (boff, subtype, p, subptr);
- if (contained_p (base_kind))
- {
- if (base_list[i].is_virtual)
- base_kind = sub_kind (base_kind | contained_virtual_mask);
- return base_kind;
- }
- }
-
- return not_contained;
-}
-#else
-// new abi
-
namespace std {
// return true if this is a type_info for a pointer type
}
}; // namespace __cxxabiv1
-#endif
// RTTI support internals for -*- C++ -*-
-
-// Copyright (C) 1994, 1995, 1996, 1998, 1999, 2000 Free Software Foundation
-
+// Copyright (C) 1994, 1995, 1996, 1998, 1999, 2000, 2001 Free Software Foundation
#include "typeinfo"
#include <cstddef>
// Class declarations shared between the typeinfo implementation files.
-#if !defined(__GXX_ABI_VERSION) || __GXX_ABI_VERSION < 100
-// original (old) abi
-
-// type_info for a class with no base classes (or an enum).
-
-struct __user_type_info : public std::type_info {
- __user_type_info (const char *n) : type_info (n) {}
-
- // If our type can be upcast to a public and unambiguous base, then return
- // non-zero and set RES to point to the base object. OBJ points to the throw
- // object and can be NULL, if there is no object to adjust.
- int upcast (const type_info &target, void *obj, void **res) const;
-
- // If our type can be dynamicly cast to the target type, then return
- // pointer to the target object. OBJ is the pointer to the most derived
- // type and cannot be NULL. SUBTYPE and SUBOBJ indicate the static type
- // base object from whence we came, it cannot be NULL. SUBTYPE cannot be
- // the same as TARGET. TARGET cannot be a base of SUBTYPE.
- // BOFF indicates how SUBTYPE is related to TARGET.
- // BOFF >= 0, there is only one public non-virtual SUBTYPE base at offset
- // BOFF, and there are no public virtual SUBTYPE bases.
- // Therefore check if SUBOBJ is at offset BOFF when we find a target
- // BOFF == -1, SUBTYPE occurs as multiple public virtual or non-virtual bases.
- // Lazily search all the bases of TARGET.
- // BOFF == -2, SUBTYPE is not a public base.
- // BOFF == -3, SUBTYPE occurs as multiple public non-virtual bases.
- // Lazily search the non-virtual bases of TARGET.
- // For backwards compatibility set BOFF to -1, that is the safe "unknown"
- // value. We do not care about SUBTYPES as private bases of TARGET, as they
- // can never succeed as downcasts, only as crosscasts -- and then only if
- // they are virtual. This is more complicated that it might seem.
- void *dyncast (int boff,
- const type_info &target, void *obj,
- const type_info &subtype, void *subobj) const;
-
- // non_virtual_base_type is used to indicate that a base class is via a
- // non-virtual access path.
- static const type_info *const nonvirtual_base_type
- = static_cast <const type_info *> (0) + 1;
-
- // sub_kind tells us about how a base object is contained within a derived
- // object. We often do this lazily, hence the UNKNOWN value. At other times
- // we may use NOT_CONTAINED to mean not publicly contained.
- enum sub_kind
- {
- unknown = 0, // we have no idea
- not_contained, // not contained within us (in some
- // circumstances this might mean not contained
- // publicly)
- contained_ambig, // contained ambiguously
- contained_mask = 4, // contained within us
- contained_virtual_mask = 1, // via a virtual path
- contained_public_mask = 2, // via a public path
- contained_private = contained_mask,
- contained_public = contained_mask | contained_public_mask
- };
- // some predicate functions for sub_kind
- static inline bool contained_p (sub_kind access_path)
- {
- return access_path >= contained_mask;
- }
- static inline bool contained_public_p (sub_kind access_path)
- {
- return access_path >= contained_public;
- }
- static inline bool contained_nonpublic_p (sub_kind access_path)
- {
- return (access_path & contained_public) == contained_mask;
- }
- static inline bool contained_nonvirtual_p (sub_kind access_path)
- {
- return (access_path & (contained_mask | contained_virtual_mask))
- == contained_mask;
- }
- static inline bool contained_virtual_p (sub_kind access_path)
- {
- return (access_path & (contained_mask | contained_virtual_mask))
- == (contained_mask | contained_virtual_mask);
- }
-
- struct upcast_result
- {
- void *target_obj; // pointer to target object or NULL (init NULL)
- sub_kind whole2target; // path from most derived object to target
- const type_info *base_type; // where we found the target, (init NULL)
- // if in vbase the __user_type_info of vbase)
- // if a non-virtual base then 1
- // else NULL
- public:
- upcast_result ()
- :target_obj (NULL), whole2target (unknown), base_type (NULL)
- {}
- };
- struct dyncast_result
- {
- void *target_obj; // pointer to target object or NULL (init NULL)
- sub_kind whole2target; // path from most derived object to target
- sub_kind whole2sub; // path from most derived object to sub object
- sub_kind target2sub; // path from target to sub object
-
- public:
- dyncast_result ()
- :target_obj (NULL), whole2target (unknown),
- whole2sub (unknown), target2sub (unknown)
- {}
- };
-
- public:
- // Helper for upcast. See if TARGET is us, or one of our bases. ACCESS_PATH
- // gives the access from the start object. Return TRUE if we know the catch
- // fails.
- virtual bool do_upcast (sub_kind access_path,
- const type_info &target, void *obj,
- upcast_result &__restrict result) const;
- // Helper for dyncast. BOFF indicates how the SUBTYPE is related to TARGET.
- // ACCESS_PATH indicates the access from the most derived object. It is
- // used to prune the DAG walk. All information about what we find is put
- // into RESULT. Return true, if the match we have found is ambiguous.
- virtual bool do_dyncast (int boff, sub_kind access_path,
- const type_info &target, void *obj,
- const type_info &subtype, void *subptr,
- dyncast_result &__restrict result) const;
- public:
- // Indicate whether SUBPTR of type SUBTYPE is contained publicly within
- // OBJPTR. OBJPTR points to this base object. BOFF indicates how SUBTYPE
- // objects might be contained within this type. If SUBPTR is one of our
- // SUBTYPE bases, indicate virtuality. Returns not_contained for non
- // containment or private containment.
- sub_kind find_public_subobj (int boff, const type_info &subtype,
- void *objptr, void *subptr) const
- {
- if (boff >= 0)
- return ((char *)subptr - (char *)objptr) == boff
- ? contained_public : not_contained;
- if (boff == -2)
- return not_contained;
- return do_find_public_subobj (boff, subtype, objptr, subptr);
- }
-
- public:
- // Helper for find_subobj. BOFF indicates how SUBTYPE bases are inherited by
- // the type started from -- which is not necessarily the current type.
- // OBJPTR points to the current base.
- virtual sub_kind do_find_public_subobj (int boff, const type_info &subtype,
- void *objptr, void *subptr) const;
-};
-
-// type_info for a class with one public, nonvirtual base class.
-
-class __si_type_info : public __user_type_info {
- const __user_type_info &base;
-
-public:
- __si_type_info (const char *n, const __user_type_info &b)
- : __user_type_info (n), base (b) { }
-
- private:
- virtual bool do_upcast (sub_kind access_path,
- const type_info &target, void *obj,
- upcast_result &__restrict result) const;
- virtual bool do_dyncast (int boff, sub_kind access_path,
- const type_info &target, void *obj,
- const type_info &subtype, void *subptr,
- dyncast_result &__restrict result) const;
- virtual sub_kind do_find_public_subobj (int boff, const type_info &subtype,
- void *objptr, void *subptr) const;
-};
-
-// type_info for a general class.
-
-#include <climits>
-
-#if INT_MAX == 2147483647
-typedef int myint32;
-#elif SHRT_MAX == 2147483647
-typedef short myint32;
-#elif SCHAR_MAX == 2147483647
-typedef signed char myint32;
-#elif LONG_MAX == 2147483647
-typedef long myint32;
-#else
-# error "No 32-bit data type?"
-#endif
-
-struct __class_type_info : public __user_type_info {
- enum access { PUBLIC = 1, PROTECTED = 2, PRIVATE = 3 };
-
- struct base_info {
- const __user_type_info *base;
- myint32 offset: 29;
- bool is_virtual: 1;
- enum access access: 2;
- };
-
- const base_info *base_list;
- std::size_t n_bases;
-
- __class_type_info (const char *name, const base_info *bl, std::size_t bn)
- : __user_type_info (name), base_list (bl), n_bases (bn) {}
-
- public:
- virtual bool do_upcast (sub_kind access_path,
- const type_info &target, void *obj,
- upcast_result &__restrict result) const;
- virtual bool do_dyncast (int boff, sub_kind access_path,
- const type_info &target, void *obj,
- const type_info &subtype, void *subptr,
- dyncast_result &__restrict result) const;
- virtual sub_kind do_find_public_subobj (int boff, const type_info &subtype,
- void *objptr, void *subptr) const;
-};
-#else
-// new abi
#include <cxxabi.h>
-#endif
#endif
-#if !defined(__GXX_ABI_VERSION) || __GXX_ABI_VERSION < 100
-
-// type info for pointer type.
-
-struct __pointer_type_info : public type_info {
- const type_info& type;
-
- __pointer_type_info (const char *n, const type_info& ti)
- : type_info (n), type (ti) {}
-};
-
-// type info for attributes
-
-struct __attr_type_info : public type_info {
- enum cv { NONE = 0, CONST = 1, VOLATILE = 2, CONSTVOL = 1 | 2 };
-
- const type_info& type;
- cv attr;
-
- __attr_type_info (const char *n, cv a, const type_info& t)
- : type_info (n), type (t), attr (a) {}
-};
-
-// type_info for builtin type
-
-struct __builtin_type_info : public type_info {
- __builtin_type_info (const char *n): type_info (n) {}
-};
-
-// type info for function.
-
-struct __func_type_info : public type_info {
- __func_type_info (const char *n) : type_info (n) {}
-};
-
-// type info for pointer to member function.
-
-struct __ptmf_type_info : public type_info {
- __ptmf_type_info (const char *n) : type_info (n) {}
-};
-
-// type info for pointer to data member.
-
-struct __ptmd_type_info : public type_info {
- __ptmd_type_info (const char *n): type_info (n) {}
-};
-
-// type info for array.
-
-struct __array_type_info : public type_info {
- __array_type_info (const char *n): type_info (n) {}
-};
-
-#else
-
#include <cxxabi.h>
-#endif
-#if defined(__GXX_ABI_VERSION) && __GXX_ABI_VERSION >= 100
namespace __cxxabiv1 {
using namespace std;
}
} // namespace std
-#endif
// Entry points for the compiler.
*valp = objptr;
-#if !defined(__GXX_ABI_VERSION) || __GXX_ABI_VERSION < 100
-// old abi
- if (catch_type == throw_type)
- return 1;
-
- if (const __user_type_info *p
- = dynamic_cast <const __user_type_info *> (&throw_type))
- {
- return p->upcast (catch_type, objptr, valp);
- }
- else if (const __pointer_type_info *fr =
- dynamic_cast <const __pointer_type_info *> (&throw_type))
- {
- const __pointer_type_info *to =
- dynamic_cast <const __pointer_type_info *> (&catch_type);
-
- if (! to)
- return 0;
-
- const type_info *subfr = &fr->type, *subto = &to->type;
- __attr_type_info::cv cvfrom, cvto;
-
- if (const __attr_type_info *at
- = dynamic_cast <const __attr_type_info *> (subfr))
- {
- cvfrom = at->attr;
- subfr = &at->type;
- }
- else
- cvfrom = __attr_type_info::NONE;
-
- if (const __attr_type_info *at
- = dynamic_cast <const __attr_type_info *> (subto))
- {
- cvto = at->attr;
- subto = &at->type;
- }
- else
- cvto = __attr_type_info::NONE;
-
- if (((cvfrom & __attr_type_info::CONST)
- > (cvto & __attr_type_info::CONST))
- || ((cvfrom & __attr_type_info::VOLATILE)
- > (cvto & __attr_type_info::VOLATILE)))
- return 0;
-
- if (*subto == *subfr)
- return 1;
- else if (*subto == typeid (void)
- && dynamic_cast <const __func_type_info *> (subfr) == 0)
- return 1;
- else if (const __user_type_info *p
- = dynamic_cast <const __user_type_info *> (subfr))
- return p->upcast (*subto, objptr, valp);
- else if (const __pointer_type_info *pfr
- = dynamic_cast <const __pointer_type_info *> (subfr))
- {
- // Multi-level pointer conversion.
-
- const __pointer_type_info *pto
- = dynamic_cast <const __pointer_type_info *> (subto);
-
- if (! pto)
- return 0;
-
- bool constp = (cvto & __attr_type_info::CONST);
- for (subto = &pto->type, subfr = &pfr->type; ;
- subto = &pto->type, subfr = &pfr->type)
- {
- if (const __attr_type_info *at
- = dynamic_cast <const __attr_type_info *> (subfr))
- {
- cvfrom = at->attr;
- subfr = &at->type;
- }
- else
- cvfrom = __attr_type_info::NONE;
-
- if (const __attr_type_info *at
- = dynamic_cast <const __attr_type_info *> (subto))
- {
- cvto = at->attr;
- subto = &at->type;
- }
- else
- cvto = __attr_type_info::NONE;
-
- if (((cvfrom & __attr_type_info::CONST)
- > (cvto & __attr_type_info::CONST))
- || ((cvfrom & __attr_type_info::VOLATILE)
- > (cvto & __attr_type_info::VOLATILE)))
- return 0;
-
- if (! constp
- && (((cvfrom & __attr_type_info::CONST)
- < (cvto & __attr_type_info::CONST))
- || ((cvfrom & __attr_type_info::VOLATILE)
- < (cvto & __attr_type_info::VOLATILE))))
- return 0;
-
- if (*subto == *subfr)
- return 1;
-
- pto = dynamic_cast <const __pointer_type_info *> (subto);
- pfr = dynamic_cast <const __pointer_type_info *> (subfr);
- if (! pto || ! pfr)
- return 0;
-
- if (! (cvto & __attr_type_info::CONST))
- constp = false;
- }
- }
- }
-#else
-// new abi
-
return catch_type.__do_catch (&throw_type, valp, 1);
-#endif
- return 0;
}
-#if !defined(__GXX_ABI_VERSION) || __GXX_ABI_VERSION < 100
-/* Backward compatibility wrapper. */
-
-extern "C" void*
-__throw_type_match_rtti (const void *catch_type_r, const void *throw_type_r,
- void *objptr)
-{
- void *ret;
- if (__throw_type_match_rtti_2 (catch_type_r, throw_type_r, objptr, &ret))
- return ret;
- return NULL;
-}
-#endif
-
/* Called from __cp_pop_exception. Is P the type_info node for a pointer
of some kind? */
__is_pointer (void *p)
{
const type_info *t = reinterpret_cast <const type_info *>(p);
-#if !defined(__GXX_ABI_VERSION) || __GXX_ABI_VERSION < 100
-// old abi
- const __pointer_type_info *pt =
- dynamic_cast <const __pointer_type_info *> (t);
- return pt != 0;
-#else
-// new abi
return t->__is_pointer_p ();
-#endif
}
-#if !defined(__GXX_ABI_VERSION) || __GXX_ABI_VERSION < 100
-// old abi
-
-extern "C" void
-__rtti_ptr (void *addr, const char *n, const type_info *ti)
-{ new (addr) __pointer_type_info (n, *ti); }
-
-extern "C" void
-__rtti_attr (void *addr, const char *n, int attrval, const type_info *ti)
-{
- new (addr) __attr_type_info
- (n, static_cast <__attr_type_info::cv> (attrval), *ti);
-}
-
-extern "C" void
-__rtti_func (void *addr, const char *name)
-{ new (addr) __func_type_info (name); }
-
-extern "C" void
-__rtti_ptmf (void *addr, const char *name)
-{ new (addr) __ptmf_type_info (name); }
-
-extern "C" void
-__rtti_ptmd (void *addr, const char *name)
-{ new (addr) __ptmd_type_info (name); }
-
-extern "C" void
-__rtti_array (void *addr, const char *name)
-{ new (addr) __array_type_info (name); }
-
-extern "C" void *
-__dynamic_cast (const type_info& (*from)(void), const type_info& (*to)(void),
- int require_public, void *address, const type_info & (*sub)(void), void *subptr)
-{
- if (!require_public) abort();
- return static_cast <__user_type_info const &> (from ()).dyncast
- (/*boff=*/-1, to (), address, sub (), subptr);
-}
-
-extern "C" void *
-__dynamic_cast_2 (const type_info& (*from)(void), const type_info& (*to)(void),
- int boff,
- void *address, const type_info & (*sub)(void), void *subptr)
-{
- return static_cast <__user_type_info const &> (from ()).dyncast
- (boff, to (), address, sub (), subptr);
-}
-
-// type_info nodes and functions for the builtin types. The mangling here
-// must match the mangling in gcc/cp/rtti.c.
-
-#define BUILTIN(mangled) \
-unsigned char __ti##mangled [sizeof (__builtin_type_info)] \
- __attribute__ ((aligned (__alignof__ (void *)))); \
-extern "C" const type_info &__tf##mangled (void) { \
- if ((*(void **) __ti##mangled) == 0) \
- new (__ti##mangled) __builtin_type_info (#mangled); \
- return *(type_info *)__ti##mangled; \
-}
-
-BUILTIN (v); BUILTIN (x); BUILTIN (l); BUILTIN (i); BUILTIN (s); BUILTIN (b);
-BUILTIN (c); BUILTIN (w); BUILTIN (r); BUILTIN (d); BUILTIN (f);
-BUILTIN (Ui); BUILTIN (Ul); BUILTIN (Ux); BUILTIN (Us); BUILTIN (Uc);
-BUILTIN (Sc);
-
-#endif
// RTTI support for -*- C++ -*-
-
-// Copyright (C) 1994, 1995, 1996, 1997, 1998, 2000 Free Software Foundation
+// Copyright (C) 1994, 1995, 1996, 1997, 1998, 2000, 2001 Free Software Foundation
//
// This file is part of GNU CC.
//
// invalidate any other reasons why the executable file might be covered by
// the GNU General Public License.
-// __GXX_ABI_VERSION distinguishes the ABI that is being used. Values <100
-// indicate the `old' abi, which grew as C++ was defined. Values >=100
-// indicate the `new' abi, which is a cross vendor C++ abi, documented at
-// `http://reality.sgi.com/dehnert_engr/cxx/'.
-
#ifndef __TYPEINFO__
#define __TYPEINFO__
extern "C++" {
-#if defined(__GXX_ABI_VERSION) && __GXX_ABI_VERSION >= 100
namespace __cxxabiv1
{
class __class_type_info;
} // namespace __cxxabiv1
-#endif
-
-#if !defined(__GXX_ABI_VERSION) || __GXX_ABI_VERSION < 100
- // In the old ABI, typeinfo name strings were not merged.
- #define __GXX_MERGED_TYPEINFO_NAMES 0
-#elif !__GXX_WEAK__
- // If weak symbols are not supported, they are still not merged.
+#if !__GXX_WEAK__
+ // If weak symbols are not supported, typeinfo names are not merged.
#define __GXX_MERGED_TYPEINFO_NAMES 0
#else
- // In the new ABI, on platforms that support weak symbols, they are
- // merged.
+ // On platforms that support weak symbols, typeinfo names are merged.
#define __GXX_MERGED_TYPEINFO_NAMES 1
#endif
public:
// the public interface
-#if !defined(__GXX_ABI_VERSION) || __GXX_ABI_VERSION < 100
const char* name() const
{ return __name; }
-#else
- const char* name() const
- { return __name; }
-#endif
#if !__GXX_MERGED_TYPEINFO_NAMES
bool before(const type_info& arg) const;
{ return !operator==(__arg); }
// the internal interface
-#if defined(__GXX_ABI_VERSION) && __GXX_ABI_VERSION >= 100
public:
// return true if this is a pointer type of some kind
virtual bool __is_pointer_p() const;
// internally used during catch matching
virtual bool __do_upcast(const __cxxabiv1::__class_type_info *__target,
void **__obj_ptr) const;
-#endif
};
class bad_cast : public exception
dealloc(base, size);
}
} // namespace __cxxabiv1
+
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